Question about 2000 Ford F150 Flareside SuperCab

1 Answer

F150 will not charge

I have a 91f150 have a new alt,bat,ect volts drop when running

Posted by on

  • Robert Dunlap May 11, 2010

    Does the alternator have an external or internal regulator?

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 178 Answers

Hello first thing make sure alt is the right amp output for vehicle have alt rechecked i have seen new ones bad before if passes check wiring at the alternator bad contact inside pigtail plug also main power wire for bad end also check batterey cables for oxidized ends if aftermarket ends with nut and bolt check wire for heating up oxidation if so cut back install new cable ends goodluck

Posted on Sep 18, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Voltage drops when setting still has new battery and alternator


Check grounds. Look at your cables. Could be corrosion.

Oct 30, 2015 | Cars & Trucks

1 Answer

2001 Ford expedition Location AND # of alternator field fuse and alternator mega fuse and any other fuse and relay that has to do with the charging system. Thank you!


Lisa I'M sorry to say their isn't any fuse or fuses that can correct problems with our alterator.Their is what is called a fuseable line witch is basicaly reistance wire that will burn out if over loaded .However you would have nothing even with a new battery NO CRANKING.
The ALT .uses diodes it is AC alternating currant unlike DC direct current..The diodes olny allow the currant to flow in 1 derection and uses a voltage regulator to allow the systems that are DC the battery to charge and at the same time other systems that run on AC voltage to work as well .
Your best bet is to talk it to somebody who you trust and test what you get at the battery with the vehicle running if it reads 14 volts at the top of the battery DC then the ALT IS GOOD , Check the BAT , at this point with the NEGITIVE cable off the BAT. It should read at least 12 volts DC on a 20 volt Dc scale.
But likely it is the alternator

Feb 26, 2015 | 2001 Ford Expedition

1 Answer

New battery not charging after changing the alternator


First make sure both battery cables are free of corrosion and ground is secured to chassis and engine then check to see if theres an alt. fuse or bat. fuse blown. Another way to test charging sys w\out an meter is to remove the ground terminal from the bat. with the car running, if the alt. is good car stays running, if all else fails take the alt and bat to a parts store that will test them for free

Dec 14, 2013 | Chevrolet Venture Cars & Trucks

2 Answers

Battery on full charge then start truck drive to town and noticed volt gauge at low turned lights and access off got home shut truck off tried starting after shut down and noting but dead bat havn prob...


You need to fully charge the battery and load test it, then check the charging system and alternator drive belt for tightness. do not remove cable when running or it can harm the charging system...ok on older cars, no longer good practice. Quick check of charge system can be done with volt meter across the battery. Volts should read between 13 and 14volts and not drop over time. With all lights, heater etc on volts should be better than 12.5 (usually above 13 and again, not drop with time.

Oct 26, 2010 | Ford F-250 Cars & Trucks

1 Answer

My alitnator pump around 13.5 when running could that be over chargin my batery,, if i dont drive it for a couple days my bat is dead i charge it but there not enough amps to turn over,, i bought a new...


should charge at more like 14.2 volts running. Don't know what year it is ,diag on a chrysler product is usually simple.Earlier firewall mounted regulator ? ground the striped wire (white,green stripe I think)Should charge like 15-18 volts with the wire grounded Later engines the regulator is in the alternator. Have to change it.
Needs to charge harder than 13.5 tho.

Oct 07, 2010 | Dodge Ram 1500 Cars & Trucks

1 Answer

1999 ford f-150. replaced alt. charged battery started truck 11.5 volts and dropping. within minuets the bat was dead. had new alt checked it was fine. coult the fusable link be bad


I doubt it is the link. The only way to kill a battery that fast is a huge short. Your wires should be smoking. Is the alternator wire shorted? I have some short troubleshooting tips, but I'm not sure they would work on such a big short--it really should be almost obvious. The tips are here: http://www.fixya.com/cars/r5925550-dead_battery_troubleshooting . These are generic instructions. Let me know if you have more questions.

Oct 02, 2010 | 1999 Ford F150 Regular Cab

1 Answer

Code 43 . my alt stayes at about 11 12 volts when


CODE 43 IS ELECTRONIC SPARK CONTROL -.KNOCK SENSOR.LOOKS LIKE ALTERNATOR NOT PUTTING OUT ENOUGH VOLTS TO CHARGE BATTERY.YOU NEED 13.5 TO 14.5 VOLTS.CHECK ALTERNATOR FUSE AND ELECTRICAL WIRES.MAKE SURE BELTS NOT SLIPPING.IF ALL IS GOOD.REMOVE ALTERNATOR.LET AUTO ZONE CHECK IT.TO MAKE SURE.TURN OFF RADIO BEFORE MOVING BATTERY CABLES.SO YOU WONT LOSE RADIO CODE.YOUR CAR IS NOT GOING TO RUN RIGHT IF THE ECM DONT RECEIVE 12 VOLTS OR 13 VOLTS.

Sep 24, 2009 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Is there a fuse/fusible link to alternator,


The wiring burning up at the altenator most likely caused the diode inside the altenator to short out. I would just replace the altenator now.

Mar 18, 2009 | 1987 Ford F 150

Not finding what you are looking for?
2000 Ford F150 Flareside SuperCab Logo

Related Topics:

113 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

61292 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Fordexpert

Level 3 Expert

5331 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...